Labiate La"bi*ate, a. [NL. labiatus, fr. L. labium lip.]
(Bot.)
(a) Having the limb of a tubularcorolla or calyx divided
into two unequal parts, one projecting over the other
like the lips of a mouth, as in the snapdragon, sage, and
catnip.
(b) Belonging to a natural order of plants ({Labiat[ae]}), of
which the mint, sage, and catnip are examples. They are
mostly aromatic herbs.
[1913 Webster]

labiate — [lā′bē it, lā′bēāt΄] adj. [ModL labiatus &LT; L labium, LIP] 1. formed or functioning like a lip 2. having a lip or lips; lipped 3. Bot. a) having the calyx or corolla so divided that one part overlaps the other like a lip b) of or pertaining to… … English World dictionary

labiate — I. adjective Etymology: New Latin labiatus, from Latin labium Date: 1706 1. having the limb of a tubular corolla or calyx divided into two unequal parts projecting one over the other like lips < mints and the snapdragon are labiate > 2. of or… … New Collegiate Dictionary